HoP stands for Holography Package for the Sardinia Radio Telescope. It is a software implementing the well-established phase-coherent microwave holography method for the surface diagnostic of the high gain antennas. This method allows to map the surface deformations of a large reflector antenna by exploiting the relationship between the aperture field and the far-field pattern. Given the complex far-field pattern, one can compute the map of the surface deformations with respect to the antenna ideal profile. HoP can currently process the data-set measured by the SRT microwave holographic system, but minor changes are needed to make HoP able to process whatever holographic data set.